| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 8.86 | 190408110_OAK_CLE |
| Joe McGinnity | SFN | 4.66 | 190408121_CIN_SFN |
| Cy Young | BOS | 3.22 | 190408130_BOS_BAL |
| Jack Chesbro | NYA | 3.06 | 190408130_NYA_CHA |
| Frank Owen | CHA | 2.97 | 190408120_NYA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Duggleby | PHI | -6.55 | 190408120_CHN_PHI |
| Kaiser Wilhelm | ATL | -3.48 | 190408130_PIT_ATL |
| Oscar Jones | LAN | -2.09 | 190408110_SLN_LAN |
| Bob Ewing | CIN | -0.8 | 190408110_CIN_SFN |
| Buttons Briggs | CHN | -0.49 | 190408132_CHN_PHI |
Based on accumulated WAA for this season up to 1904-08-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.29 | Rube Waddell | 265.3 | OAK |
| +002+ | 8.98 | Joe McGinnity | 283.3 | SFN |
| +003+ | 8.77 | Jack Chesbro | 283 | NYA |
| +004+ | 8.58 | Frank Owen | 251 | CHA |
| +005+ | 7.37 | Cy Young | 246.3 | BOS |
| +006+ | 7.17 | Eddie Plank | 246 | OAK |
| +008+ | 6.24 | Ed Killian | 240.3 | DET |
| +010+ | 5.17 | Patsy Flaherty | 194 | TOT |
| +011+ | 5 | Red Donahue | 179 | CLE |
| +012+ | 4.97 | Bill Dinneen | 189.7 | BOS |
| +014+ | 4.77 | Frank Smith | 115.7 | CHA |
| +015+ | 4.66 | Jesse Tannehill | 193.7 | BOS |
| +016+ | 4.61 | Earl Moore | 192.3 | CLE |
| +017+ | 4.43 | George Mullin | 261 | DET |
| +019+ | 4.27 | Harry Howell | 180 | BAL |
| +018+ | 4.27 | Bill Bernhard | 209 | CLE |
| +023+ | 4 | Fred Glade | 182 | BAL |
| +028+ | 3.57 | Jack Powell | 238.7 | NYA |
| +029+ | 3.48 | Kid Nichols | 193 | SLN |
| +030+ | 3.46 | Nick Altrock | 205 | CHA |
| +034+ | 3.11 | Bill Donovan | 207 | DET |
| +037+ | 3.07 | Weldon Henley | 176.7 | OAK |
| +035+ | 3.07 | Doc White | 126 | CHA |
| +040+ | 2.83 | Jake Weimer | 193.7 | CHN |
| +043+ | 2.7 | Addie Joss | 103.7 | CLE |
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